Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures.

Ignition on, engine not running With the DRBIII®, read DTCs and record the related Freeze Frame data.
Check for any related TSBs.

With the DRBIII®, actuate the A/C Clutch Relay.

Is the A/C Clutch Relay clicking?
1. Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
2. No --> Go To 2
Turn the ignition off.
Remove the A/C Clutch Relay from the IPM.

Measure the resistance between Coil Terminals of the A/C Clutch Relay.

Is the resistance between 50.0 and 90.0 ohms?
1. Yes --> Go To 3
2. No --> Replace the A/C Clutch Relay.
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
Ignition on, engine not running.
Measure the voltage on the Internal Fused Ignition Switch Output circuit for the A/C Clutch in the IPM.

Is the voltage above 10.0 volts?
1. Yes --> Go To 4
2. No --> Repair the open or short to ground in the Internal Fused Ignition Switch Output circuit. Inspect and replace fuses as necessary.
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
Turn the ignition off.
Measure the resistance of the (C13) A/C Clutch Relay Control circuit from the IPM to the PCM harness connector.

Is the resistance below 5.0 ohms?
1. Yes --> Go To 5
2. No --> Repair the open in the (C13) A/C Clutch Relay Control circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
Measure the resistance between ground and the (C13) A/C Clutch Relay Control circuit at the PCM harness connector.
Is the resistance below 100 ohms?
1. Yes --> Repair the short to ground in the (C13) A/C Clutch Relay Control circuit.
  Perform POWERTRAIN VERIFICATION TEST VER - 2 .
2. No --> Go To 6

NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.
1. Repair
  1. Replace and program the Powertrain Control Module per Service Information.
  2. Perform POWERTRAIN VERIFICATION TEST VER - 2 .